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    <title>Code coverage report for lesson6\main.js</title>
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    <h1>
      <a href="../index.html">all files</a> / <a href="index.html">lesson6/</a> main.js
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        <span class="strong">87.5% </span>
        <span class="quiet">Statements</span>
        <span class='fraction'>14/16</span>
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        <span class="strong">91.67% </span>
        <span class="quiet">Branches</span>
        <span class='fraction'>11/12</span>
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        <span class="strong">100% </span>
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        <span class='fraction'>1/1</span>
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        <span class="strong">87.5% </span>
        <span class="quiet">Lines</span>
        <span class='fraction'>14/16</span>
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<span class="cline-any cline-yes">1×</span></td><td class="text"><pre class="prettyprint lang-js">var fibonacci = function (n) {
    if(typeof n !== 'number'){
        throw new Error('n should be a Number');
    }
    if(n&lt;0){
        throw new Error('n should &gt;= 0');
    }
    if(n&gt;10){
        throw new Error('n should &lt;= 10');
    }
    if ( n === 0 ){
        return 0;
    }
    if(n === 1){
        return 1;
    }
    return fibonacci(n-1) + fibonacci(n - 2);
}
&nbsp;
<span class="missing-if-branch" title="if path not taken" >I</span>if(require.main === module) {
    // 如果是直接执行 main.js, 则进入此处
    // 如果main.js 被其它文件require，则不会
<span class="cstat-no" title="statement not covered" >    var n = Number(process.argv[2]);</span>
<span class="cstat-no" title="statement not covered" >    console.log('fibonacci(' + n + ') is ', fibonacci(n));</span>
}
&nbsp;
exports.fibonacci = fibonacci;</pre></td></tr>
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